I have been watching these spots on my leaves for a while now. At first I thought it was because of my nutrient abuse when I tried to grow these in 3 different systems in the past month. Then I thought it was because I would sometimes splash water on the leaves and burn the plants but now I think I have a real issue. The spots are spreading to other plants and on growth after my learning curve issues. The leaves steadily grow more crusted with the spots, the leaves yellow and then they get hard and crispy. What to do? Ppm - 250 ph 6.0 water temp res - 70 plant temp - 75 aeroponic single tub, lower pressure misters Advanced Nutrients Sensi Grow 2 part fert and I use hydrozyme (30ml in 5 gallon tank)for the roots Anything I am leaving out?